Night blindness first requires determining the cause of your condition. If it is due to a deficiency of vitamin A leading to night blindness, supplementing vitamin A can alleviate the symptoms, and the night blindness will disappear. However, if the night blindness is caused by retinitis pigmentosa, as this condition progresses with age, the symptoms of retinal pigment degeneration worsen and the retinal-caused night blindness will gradually intensify, eventually there is a possibility of blindness. It is essential first to determine the specific cause. Some people may experience a rapid progression of the disease, but others with retinitis pigmentosa, or such symptoms of night blindness, may not be very severe. They could maintain useful vision throughout their lives, which mainly depends on the type and severity of the genetic mutation and the specific causes.